the commands
set text size
num
and
set text font
"fontname"
TEXT : TEXT X,Y,String
CENTER TEXT : CENTER TEXT X,Y,String
SET TEXT FONT : SET TEXT FONT Fontname
SET TEXT SIZE : SET TEXT SIZE Point size
SET TEXT OPAQUE : SET TEXT OPAQUE
SET TEXT TRANSPARENT : SET TEXT TRANSPARENT
SET TEXT TO NORMAL : SET TEXT TO NORMAL
SET TEXT TO ITALIC : SET TEXT TO ITALIC
SET TEXT TO BOLD : SET TEXT TO BOLD
SET TEXT TO BOLDITALIC : SET TEXT TO BOLDITALIC
PERFORM CHECKLIST FOR FONTS : PERFORM CHECKLIST FOR FONTS
TEXT BACKGROUND TYPE : Return Integer=TEXT BACKGROUND TYPE()
TEXT FONT$ : Return String=TEXT FONT$()
TEXT SIZE : Return Integer=TEXT SIZE()
TEXT STYLE : Return Integer=TEXT STYLE()
TEXT WIDTH : Return Integer=TEXT WIDTH(String)
TEXT HEIGHT : Return Integer=TEXT HEIGHT(String)
ASC : Return Integer=ASC(String)
BIN$ : Return String=BIN$(Value)
CHR$ : Return String=CHR$(Value)
HEX$ : Return String=HEX$(Value)
LEFT$ : Return String=LEFT$(String,Value)
LEN : Return Integer=LEN(String)
LOWER$ : Return String=LOWER$(String)
MID$ : Return String=MID$(String,Value)
RIGHT$ : Return String=RIGHT$(String,Value)
STR$ : Return String=STR$(Value)
UPPER$ : Return String=UPPER$(String)
VAL : Return Float=VAL(String)
SPACE$ : Return String=SPACE$(Number of Spaces)
are found the manual